Merge pull request #19409 from dmarcos/bug995540

Bug 995540 - [Sora][camera]video recording would not stop instantly when...(cherry picked from commit 93623f6435849cc9f54d9996e8e64828ac9091d1)

Conflicts:

	apps/camera/js/app.js
	apps/camera/js/controllers/camera.js
	apps/system/js/attention_screen.js
Bug 939174 - Launch whats new FTU tutorial to demo edge gestures etc. r=borjasalguero,alive

* Add shared VersionHelper
* Unit tests for VersionHelper, FTULauncher
* Check device.previous_os in FTULauncher/FTU app
* Launch full ftu when ftu.enabled always
* Launch ftu whats new tutorial when upgrade detected
* Add config for 1.3-2.0 upgrade tutorial
Merge pull request #20175 from davidflanagan/bug995540-master

Merge pull request #19409 from dmarcos/bug995540 r=dmarcos
Merge pull request #20087 from sfoster/bug-939174-upgrade-tutorial

Bug 939174 - Launch whats new FTU tutorial to demo edge gestures etc. r=borjasalguero,alive